We report on a novel route of preparing molybdena-modified bismuth tungstates and their successful application in the photocatalytic oxygen evolution reaction and the oxidation of glycerol. Hierarchically assembled monocrystalline Bi2WO6 nanoplatelets with a specific surface area of 10 m2/g were obtained applying a hydrothermal synthesis method using Na2WO4 and Bi(NO3)3 as precursors, followed by a solvent-free chemical vapor deposition method using Mo(CO)6, resulting in highly dispersed molybdena species. Extensive characterization using X-ray photoelectron spectroscopy, low-energy ion scattering, and Raman spectroscopy showed that microcrystalline MoO3 islands were formed on the bismuth tungstate surface that grew in height and lateral dimension with increasing loading. Correspondingly, the molybdena-modified materials were found to have favorable photocatalytic and photoelectrochemical properties in the oxygen evolution reaction and the selective oxidation of glycerol.
Dittmer, A., Menze, J., Mei, B. T., Strunk, J., Luftman, H. S., Gutkowski, R., ... Muhler, M. (2016). Surface Structure and Photocatalytic Properties of Bi2WO6 Nanolatelets Modified by Molybdena Islands from Chemical Vapor Deposition. Journal of physical chemistry C, 120(32), 18191-18200. https://doi.org/10.1021/acs.jpcc.6b07007